4.3+5.8= 3.6+6.4= 0.74﹣0.34= 0.9﹣0.25=
5×4= 0.21×3= 0.64÷0.8= 0.48÷0.12=
88÷8= 1.1×9= 1÷0.25= 0÷0.4=
15÷0.3×0.1= 0.4÷0.2= (0.7+0.8)×3= 7×1.2+0.8=
1.8×4﹣1.2= (2.6﹣1.8)×0.5= 4+3.2÷0.8= 0.72÷72﹣0.1=
7.5÷2.5﹣0= .
直接写出结果
(1)0.25×4= 1(2)4.8÷8= 0.6(3)0.5+0.5÷0.5=
(4)50×0.8= 40(5)0.99÷33= 0.03(6)4×7.5×2.5=
(7)4.5×0.1= 0.45(8)2.4÷0.8= 3(9)(2.7﹣2.7)×3.5=
(10)1.3×7= 9.1(11)2÷0.4= 5(12)2.1×40÷10= .
你能口算得又对又快吗?
(1)0.02×500= 25×0.04= 3.2×2﹣6.4= 0.4×3+5.6=
(2)8.08÷8= 5.4÷0.54= 2.33÷23.3﹣0.01= 15×0.2×0.2=
(3)5.61×100﹣100= 26÷(1.7+0.9)= 2.7×4+2.3×4= 0.75÷3÷0.5=
5.4÷0.6= 4.8×0= 16÷1.6= 0.02×0.5=
27÷30= 3.4÷17= 0.15+0.5= 1.6×4÷1.6×4=
0.47+0.7= 5.40÷18= 2.92+0.65= 2÷0.125=
3÷0.75= 1.62÷0.54= 3.5×4= 4﹣1.04=
1.4×0.5= 7.5÷1.5= 0.48÷1.6= 0.51÷17=
1.2×0.4= 1.8﹣0.93= 0.67+0.43= 2.5×5﹣2.5=
5.4÷0.01= 0.6÷0.12= 3.2×2.5= 0.4×4÷0.4×4=
0.7+0.9= 0.125×80= 8.24+3.76= 62.5×80=
4.1﹣3.8= 0.32÷16= 14+0.78= 6.4÷16=
14.6﹣0.34= 5÷10= 1.3+8.56= 0.7﹣0.55=
2.4×5= 1﹣0.03= 8.1÷3= 3.6÷12=
250×0.04= 30.5+3.05= 3.75×400= 0.78+2.2=
1.5×8= 6×1.5= 25×0.04= 9.6÷16=
5﹣0.08= 3.25+0.75= 10﹣0.1= 0.17×4=
7.4÷2= 0.16÷8= .
口算下面各题.
4.8÷1.2= 5.5÷1.1= 0.4×0.05=
1.6÷0.04= 0.25÷0.5= 0.8×1.25=
9.6÷0.6= 0.92÷0.4= 7.8÷1.3=
0.2×1.5=